A group of airlines are suing the Dutch government over plans to restrict flights at Amsterdam Schiphol Airport.
A flight cap could be introduced due to noise pollution and climate impacts.
It wants to cut flights from 500,000 to 440,000 annually.
KLM, Easyjet, Delta Air Lines, TUI and Corendon say it breaches EU and international law.
The legal action is backed by the International Air Transport Association (IATA) which has introduced its own legal challenge.
Global aviation makes up about 2.4% of greenhouse gas emissions.
The airlines claim they can reduce noise pollution and emissions without the flight cap
“The aviation industry is pursuing a net-zero goal. This will be achieved primarily through sustainable aviation fuels and new technology,” IATA says.
